Brain Teasers
Fly in a Bottle
Fun: (2.57)
Difficulty: (1.11)
Puzzle ID: #40796
Submitted By: rockstar1234567 Corrected By: annvie9
Submitted By: rockstar1234567 Corrected By: annvie9
Science
Science brain teasers require understanding of the physical or biological world and the laws that govern it.Science
Two identical jars are placed on a scale, each with one fruit fly in it. One fly is flying and the other one is sitting. Which jar weighs more?
Hint
Just because you can't see it doesn't mean it isn't there.Answer
Neither; they weigh the same. The only reason the fly is flying is because it flaps its wings to make air push it up. So the fly's weight is converted into air pressure.Hide Hint Show Hint Hide Answer Show Answer
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Comments
This was proved on "MythBusters". They used pigeons and a van, lol.
i got that they would weigh the same, i just couldn't figure out why (scientifically)
great teaser!!
great teaser!!
you know, ive seen that episode of mythbusters
sciency
yeah. got an A for my science teaser. ngahahah..
easy
I knew I learned this on TV. Yeah Mythbusters.
rightnow, the hardness is exactly 1
the flying one would weigh lesss because i assume the bottles are open
Even if they were open, they might have been upside-down.
i'm sorry but that is scientifically incorrect. check your facts before posting a teaser in the future please.
i must say there are several variables here. I got mixed feelings about this one
TOO EASYY
Sophieskelly, what are you talking about?!?
The teaser IS correct, but if you think it is not, please make an argument.
The teaser IS correct, but if you think it is not, please make an argument.
Many variables, but technically the answer given is correct.
I've seen a question like this in a Mensa book.
I thought it had something to do with the fly really flying and it being in a vacuum...
haha I agree, I thought it was going to be like a trick our something like
the fly is "sitting" because it's in a vacuum sorta thing and thus there's no air and thus the jar is lighter lol
the fly is "sitting" because it's in a vacuum sorta thing and thus there's no air and thus the jar is lighter lol
Aug 04, 2011
It's partially correct but yes, many variables. A fly's propulsion is not continuous - it flaps its wings. The effect on the jar would vary depending on how often, how hard and which direction the fly was flapping.
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